diff options
| -rw-r--r-- | target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch b/target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch new file mode 100644 index 0000000000..0efe16f9d4 --- /dev/null +++ b/target/linux/brcm47xx/patches-3.10/029-mtd-bcm47xxpart_detect_block_aligned_Squashfs_partition.patch @@ -0,0 +1,40 @@ +mtd: bcm47xxpart: detect block aligned Squashfs partition + +Most of the bcm47xx devices use TRX format for storing kernel and some +partition like Squashfs or JFFS2. This is pretty flexible solution, CFE +(the bootloader) just writes (and later boots) TRX at some hardcoded +place and paritions can vary in the size. + +However some devices don't use TRX format. Very recently we have +discovered ZTE H218N that has kernel and rootfs partitions at some +"random" places. + +This patch allows Linux find a rootfs partition after installing custom +image with a CFE bootloader. + +Signed-off-by: Rafał Miłecki <zajec5@gmail.com> + +--- a/drivers/mtd/bcm47xxpart.c ++++ b/drivers/mtd/bcm47xxpart.c +@@ -33,6 +33,7 @@ + #define ML_MAGIC1 0x39685a42 + #define ML_MAGIC2 0x26594131 + #define TRX_MAGIC 0x30524448 ++#define SQSH_MAGIC 0x71736873 /* shsq */ + + struct trx_header { + uint32_t magic; +@@ -170,6 +171,13 @@ static int bcm47xxpart_parse(struct mtd_ + offset = rounddown(offset + trx->length, blocksize); + continue; + } ++ ++ /* Squashfs on devices not using TRX */ ++ if (buf[0x000 / 4] == SQSH_MAGIC) { ++ bcm47xxpart_add_part(&parts[curr_part++], "rootfs", ++ offset, 0); ++ continue; ++ } + } + + /* Look for NVRAM at the end of the last block. */ |